LTC7806RUFDM#PBF

LTC7806RUFDM#PBF is a high performance 2-phase single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. High-frequency 2-phase operation reduces input and output capacitor requirements and allows the use of smaller inductors compared to the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, simplifying high-power boost applications. The synchronous pass-through capability also minimizes losses in automotive start-stop applications. It operates from a wide 4.5V to 40V input supply range. When biased from the boost converter output, it can operate from an input supply as low as 1V after start-up. It is used in applications such as automotive and transportation, audio and RF power amplifiers, industrial and medical, and communications.

• 2-phase operation reduces required input and output capacitance and power supply induced noise
• Synchronous operation for highest efficiency and reduced heat dissipation
• PassThru™ operation: 100% duty cycle capability for synchronous MOSFET
• RSENSE or inductor DCR current sensing, spread spectrum operation
• Phase-lockable frequency range from 100KHz to 3MHz, input current monitor output
• Internal LDO powers gate drive from VBIAS or EXTVCC
• VBIAS sleep mode current is 18μA typical at (SENSE1+ <lt/> 3.2V, EXTVCC = 0V)
• VBIAS shutdown current is 1.5μA typical at (TA = 25°C, VBIAS = 12V)
• Synchronizable frequency range from 0.1 to 3MHz
• Operating temperature range from -40°C to 150°C, 28-lead plastic QFN package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party